Quote:
Originally Posted by Phil Schuyler
I don't think this is an indication problem because the indicated temperature was much cooler without thermostat installed. Even if it was an indication problem the lower radiator hose should not be cool after driving around for 20 minutes.
I wonder if the water pump is suspect?
Phil
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My belief is that the thermostat doesn't see the coolant temperature required to open it at a lower temperature. The 'stat should start to open at 80C............but, for reasons unknown, it doesn't see this temperature until the temperature of the head (where the temp sensor is) is considerably higher.
If the water pump was suspect, the engine would overheat in high ambient temperatures............almost immediately.
I'm musing about the SD............your situation might be different...........although I don't see any mistakes in your fill technique.
There is some discussion on the board regarding the orientation of the thermostat. Some have an arrow requiring installation with the arrow facing upward. Some don't have the arrow. The requirement for a specific orientation for performance has not been verified or understood.